[Libguestfs] [hivex][PATCH] Increase filetime printing resolution to sub-second

Signed-off-by: Alex Nelson <ajnelson(a)cs.ucsc.edu&gt; --- xml/hivexml.c | 20 +++++++++++++++++--- 1 files changed, 17 insertions(+), 3 deletions(-) diff --git a/xml/hivexml.c b/xml/hivexml.c index 5030c24..98b90c5 100644 --- a/xml/hivexml.c +++ b/xml/hivexml.c @@ -185,6 +185,8 @@ filetime_to_8601 (int64_t windows_ticks) char *ret; time_t t; struct tm *tm; + int64_t sub_seconds; + size_t ftd; /* # chars formatted so far. */ if (windows_ticks == 0LL) return NULL; @@ -194,16 +196,28 @@ filetime_to_8601 (int64_t windows_ticks) if (tm == NULL) return NULL; - ret = malloc (TIMESTAMP_BUF_LEN); + sub_seconds = windows_ticks % WINDOWS_TICK; + /* Trim trailing zeroes from fractional part. */ + while (sub_seconds % 10 == 0 && sub_seconds > 0) { + sub_seconds /= 10; + } + + ret = calloc (TIMESTAMP_BUF_LEN, sizeof (char)); if (ret == NULL) { - perror ("malloc"); + perror ("calloc"); exit (EXIT_FAILURE); } - if (strftime (ret, TIMESTAMP_BUF_LEN, "%FT%TZ", tm) == 0) { + if (strftime (ret, TIMESTAMP_BUF_LEN, "%FT%T", tm) == 0) { perror ("strftime"); exit (EXIT_FAILURE); } + ftd = strlen (ret); + + if (snprintf (ret + ftd, TIMESTAMP_BUF_LEN - ftd, ".%" PRIi64 "Z", sub_seconds) == 0) { + perror ("snprintf"); + exit (EXIT_FAILURE); + } return ret; } -- 1.7.6.4